I actually just jumped ship from Dropbox to Jungle Disk a week or so ago, because I wanted the security of encrypting files/"disks" with my own encryption key. That, and I'm getting twice the space for just $3 a month.

This looks like it would be nice for a home server kind of setup, or with some disk space with a hosting provider and being able to have it setup just how you like it. I'm looking to drop Syncplicity as well, this could do the trick. Might have to give it a whirl.

I'm using it in its Network Drive "mode" (whatever it is called), but it has a PC-to-PC sync that would work as a Dropbox substitution if you want offline functionality as well. The options are presented to you during the initial linkup of PC to disk.

I remember SpiderOak being mentioned somewhere (most likely here) a few months back and it totally slipped my mind. Any comparisons to Jungle Disk, as far as "drag, drop and forget it"? I really like JD's pricing as well, for a pay-per-GB basis instead of Dropbox/Syncplicity/SpiderOak and their tiered pricing.